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Thread: 1966 Shovel engine rebuild

  1. #21
    Join Date
    Apr 2008
    Location
    Upper Yarra Valley, Victoria. Australia
    Posts
    829

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    Howdy Ryan. I must have missed when you quoted the saying, but it applies to me as well.
    Used my up-n-down moving, rotating thingamyjig vise to hold the head. It has some stool jacks underneath to help adjust and support it.
    I wanted it to tilt, so I could clock the face of the exhaust flange, before drilling it for the stud.
    It was fun chasing it for about half an hour, then a little trying for the next 20 minutes and downright frustrating for the next 15.

    I got it to .002 on the X direction but couldn't get closer than .008 on the Y but that may be my hand filing of the welded area.
    Got the center drill into the job before the wife called for dinner last night.
    Pictures for your entertainment.







    Check out the disapproving look of my Health & Safety officer. I'm sure I heard her mutter...Flimsy setup!
    Steve Little
    Upper Yarra Valley. Victoria.
    Australia.
    AMCA member 1950

  2. #22
    Join Date
    Jul 2010
    Location
    Ohio
    Posts
    540

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    Steve,
    I lost my safety officer last year, but she wasn't quite as boisterous as yours, she slept most of the time. I probably bored the heck out of her. I think your setup could be more rigid as you mention, but for a one off repair, do what needs done and move on. I made these drill jigs for hand drilling these shovel exhaust fixes quite a few years ago. Since your lathe is down and short of outside boring on a mill, 3 pins could have been put on a bolt circle simulating the diameter. Just another way of skinning the cat. Really enjoy your posts and progress you make. I spend more time on fixtures I hardly use twice.



    Hope all is well. Bob
    Bob Rice #6738
    He that conquereth his own soul is greater than he who taketh a city.

  3. #23
    Join Date
    Apr 2008
    Location
    Upper Yarra Valley, Victoria. Australia
    Posts
    829

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    She's a good dog and has a wacky sense of humor. When I tell her to go outside before grinding, she will waddle toward the door, making a play growl noise looking left and right looking for something to nick. Usually it will be a glove, or piece of unwanted paper out of the bin. She will lay outside with it until I call her back in when I'm finished, and she will carry it back to me and drop it.

    Chucked the 5/16" unc start tap and machine drove it half way in. Then continued to the bottom with the tap handle. Then chased it with a finish tap to 3/4 down. Then used Brakeclean to clean the hole and stud. Used Loctite 263 and tightened the stud down. I guessed the amount of protusion, using the gasket and a spare nut as a guestimation of the exhaust flange thickness. There are no inclusions in the weld and it has a beautiful thread.









    Steve Little
    Upper Yarra Valley. Victoria.
    Australia.
    AMCA member 1950

  4. #24
    Join Date
    Apr 2008
    Location
    Upper Yarra Valley, Victoria. Australia
    Posts
    829

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    Quote Originally Posted by BigLakeBob View Post
    Steve,
    I lost my safety officer last year, but she wasn't quite as boisterous as yours, she slept most of the time. I probably bored the heck out of her. I think your setup could be more rigid as you mention, but for a one off repair, do what needs done and move on. I made these drill jigs for hand drilling these shovel exhaust fixes quite a few years ago. Since your lathe is down and short of outside boring on a mill, 3 pins could have been put on a bolt circle simulating the diameter. Just another way of skinning the cat. Really enjoy your posts and progress you make. I spend more time on fixtures I hardly use twice.

    Hope all is well. Bob
    Thanks for the alternative idea Bob. I was going lickity split today and hit the "Send" button before posting a thanks.
    Had a time line in my head this morning and it included (drilling and taping exhaust, fit stud, wash head, wash valves and springs, check valve springs, check valve to seats, wash rocker boxes and rocker gear, set end tolerances, wash again, lube and fit, and fit cover to head. Got it done and washed my hands at 1/4 to 6.
    Steve Little
    Upper Yarra Valley. Victoria.
    Australia.
    AMCA member 1950

  5. #25

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    Hope you're charging by the hour Steve

  6. #26
    Join Date
    Mar 2017
    Posts
    141

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    Steve,
    Thanks for taking the time to share your progress, I really enjoy reading them. Great looking shop mate as well. I have a jet black cat that thinks she's a dog that always watches me do everything with great interest, she even plays fetch, crazy.
    Do you have or use an Indicol for holding your indicator while indicating on your Bridgeport? If not they sure come in handy and are worth the investment for the name brand because the generics suck. They clamp to the Quill.

    Here is a link to a picture an Indicol:

    https://cdn.mscdirect.com/global/ima...0645151-24.jpg

    I'm pretty sure you use a tap guide from getting to know your work, but for those who do not know what the center mark or dimple is used for on the top of a tap is, it is for the use of a tap guide. One can read up on their use.

    Here is a link to a picture of a tap guide:

    https://cdn.mscdirect.com/global/ima...9526747-24.jpg

    What is wrong with your lathe Steve?
    Last edited by ryan; 06-21-2017 at 08:47 AM.

  7. #27
    Join Date
    Mar 2017
    Posts
    141

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    Quote Originally Posted by BigLakeBob View Post


    Bob,
    Sorry to hear about the loss of your beloved pet, they have such a short life span while Napoleon's Tortoise is still living on Napoleon's exiled island.
    Great looking jigs by the way. Have you ever thought about adding drill bushings to them? They come in different lengths and will guide your drill bit and tap to avoid any setups so you can use a hand drill with a drill stop. You will need one size for your drill bit and one size for your tap. The chosen bushings will have the same o.d., you just pop one bushing out and pop the other bushing in. You can even go as far as adding two cam locks to your jigs for use on each side of the head casting to lock the jig in place after finding your location. The cam locks look like and fit like dowel pins that are offset ground half way down and have an Allen head to rotate them.
    All parts are only a few dollars and the machine work needed is to open up your locating hole for the drill bit bushings and drill two holes for the cam locks. Keep in mind that all holes must be drilled and reamed. I know one should not assume, but I assume if you took the time to make the jigs, you must use these jigs quite often.
    These are only thoughts and I am by no means trying to tell you how to do your work because they look great.
    Thank you!
    Last edited by ryan; 06-21-2017 at 06:54 PM.

  8. #28
    Join Date
    Apr 2008
    Location
    Upper Yarra Valley, Victoria. Australia
    Posts
    829

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    Quote Originally Posted by DaveAus View Post
    Hope you're charging by the hour Steve
    You put that wooden spoon down right now young man!!

    Hi Ryan. Thanks for the links. I have a tap guide but don't have a Indicol.
    I've seen them used on YouTube video's and like the concept, but haven't got around to purchasing one yet. Keep the good ideas coming.

    Checked the valve springs to make sure everyone was pulling pulling the load.



    The seals on this head would not fit. This one was too loose and the other guide was too large for the seal. I used the bit of round metal to hold the leading chamfer of the seal and crimped the contact ring area of the seals a bit deeper with the sharp area of my wire cutter pliers.

    On the fatter guide I had to open the seal up. Did this by doing little pinching action around the ring of the seal. It worked like a metal spreader and the seal drove on the guide with nice tension.
    The other head had normal guides and gave no problem with the seals.





    Steve Little
    Upper Yarra Valley. Victoria.
    Australia.
    AMCA member 1950

  9. #29
    Join Date
    Apr 2008
    Location
    Upper Yarra Valley, Victoria. Australia
    Posts
    829

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    Aimed the head the other way and gave the valve head a couple of BONK BONK's with the nylon hammer to make sure the collets are seated.



    Fitted the rocker cover and tightened the nuts down to 120 inch lbs.



    Wrapped it in cling warp.

    What will we work on next. Cases or flywheels? Cast your vote.
    Steve Little
    Upper Yarra Valley. Victoria.
    Australia.
    AMCA member 1950

  10. #30
    Join Date
    Mar 2017
    Posts
    141

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    Flywheels for my vote.

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